Friday, January 9, 2009


So if any of you have been following the problem I was having with the rolling nightmare, I got some news.....I think I figured out what it was.

To recap: I was going crazy last season trying to find out why my bike felt like it had no power. It would go pretty fast, but getting there was a chore. It just felt like it was lacking. I tried and checked everything I could think of (and a big thanks to all of you that helped me), new clutch plates and steels, switched points to electronic ign., swapped coils, adjusted timing over and over, pushrods, you name it I tried it. Well the one thing I couldn't/didn't check I finially got around to since I'm tearing the bike down for a complete overhaul. I started pulling the valves out of the heads to clean them up and yup, you guessed it..........


Of course it was the last one I pulled. The other 3 all spun out nice and smooth. I still haven't got the bent one out. It won't spin at all and only has about 1/3 of it's full open and close movement. It didn't show on a compression test because it would fully close, just not open all the way. Weird. Guess I got real lucky it didn't seize up on me, especially during the Gypsy Run!!

The good news is that I have another set of heads and valves pretty much ready to go. I measured out the valve stem to guide clearance and they're all within spec. The seats measure a little deep though, so it looks like the heads will be going to the machine shop to have some new hardened seats put in.

All in all, it could've been a heck of a lot worse and it was a good learning experience. Don't you love when things work half-assed and don't just break? Sure makes things a lot more complicated!


the good captain said...

Bent valve = slow Ironhead

Straight valve = still not fast enough Ironhead


The Bandit

Cain said...


Paul said...

That's cool, a simple problem that made itself known without taking out lots of expensive hardware.
Get it back together, riding season's almost here! it's not.

KnuckleBuster said...

I really think you should have waited and tried to fix it on a camping trip...

Cain said...


You know Jay, I thought about it. Night time, in the woods, barely any light, and not having the correct tools or parts. I mean really, what could go wrong?